AIDS (Acquired Immune Deficiency Syndrome) is a diagnosis, not a disease that can be fought.
HIV (Human Immunodeficiency Virus) is the virus that causes AIDS. HIV attacks the cells in the body that fight disease and uses them to reproduce. The body's immune response only serves to benefit the virus.
A dead form of a pathogen that stimulates an immune response is known as an inactivated or killed vaccine. These vaccines contain pathogens that have been killed or inactivated so they cannot cause disease but are still able to elicit an immune response. This process helps the immune system recognize and remember the pathogen, providing protection against future infections. Examples include the polio vaccine and the hepatitis A vaccine.
An immune response is part of the body's defense against pathogens in which cells of the immune system react to each kind of pathogen with a defense targeted specifically toward that pathogen.
White Blood Cells
The molecules on pathogens that enable the immune system to distinguish one kind of pathogen from another are called antigens. Antibodies destroy pathogens by binding to the antigens on the pathogen.
the inactive form still has the antigens (protein markers) specific to that pathogen on the surface. the immune system develops specific responses to this pathogen when it is encountered after a vaccination. as it is inactive the person does not suffer the effects of this pathogen, but when an active form is encountered later the immune system is quicker to respond due to the fact that it now recognises those antigens.
Yes.
Antigen. An antigen is a small piece of a pathogen, such as a virus or bacteria, that triggers the immune system to produce antibodies to fight off the infection. This immune response helps protect the body from further exposure to the pathogen in the future.
introducing a harmless version of the pathogen to the immune system. This allows the immune system to recognize and remember the pathogen, so it can respond quickly if the real pathogen is encountered in the future. Ultimately, vaccinations help prevent illness and the spread of infectious diseases.
They grow and multiply with ease.
The major histocompatibility complex (MHC) molecules are marker molecules on cells that the immune system uses to recognize pathogens. MHC molecules present fragments of pathogens on the cell surface to alert immune cells to the presence of the pathogen. This helps the immune system to target and eliminate infected cells.
During the second exposure to a pathogen, the immune system can mount a quicker and more targeted response due to immunological memory. This is because the immune system has already encountered the pathogen before and has memory cells ready to recognize and respond more efficiently to the pathogen. This results in a faster and more effective clearance of the pathogen from the body.
The HIV virus.